问题
解答题
计算: (1)5-3÷2×
(2)-1-(-3)3+[3+0.4×(-1
|
答案
(1)原式=5-3×
×1 2
-4×(-2)1 2
=-5-
+83 4
=2
;1 4
(2)原式=-1+27+[3+
×(-2 5
)]÷(-2)3 2
=-1+27-6 5
=24
.4 5
计算: (1)5-3÷2×
(2)-1-(-3)3+[3+0.4×(-1
|
(1)原式=5-3×
×1 2
-4×(-2)1 2
=-5-
+83 4
=2
;1 4
(2)原式=-1+27+[3+
×(-2 5
)]÷(-2)3 2
=-1+27-6 5
=24
.4 5